** U.S.-listed shares of Canadian pot producer ACB.TO down 3.1% to $4.89 as co says billionaire investor Nelson Peltz resigned as senior advisor effective Sept. 25
** ACB tapped Peltz as a strategic adviser in March last year, betting on the consumer industry-focused investor to help the recreational marijuana maker chart its expansion into new markets
** However, Canadian pot companies have had a rough year as most continue to tackle oversupply issues with little cash on their balance sheets
** Many investors have also deserted the sector, frustrated with lack of profitability due to fewer-than-expected retail stores, cheaper rates on the black market and slow overseas growth
** ACB last week posted a loss of C$3.31 bln ($2.47 bln) for the year ended June 30
** ACB is down 81% YTD
($1 = 1.3383 Canadian dollars)